[Acoustics] Re: Acoustics Digest, Vol 20, Issue 8
Andrew_Hautzinger at fws.gov
Andrew_Hautzinger at fws.gov
Thu Mar 31 14:58:21 CST 2005
I've deployed an SW in a submerged pipe that feeds a wildlife refuge in
western Arizona. The deployment has the SW mounted at the top of the pipe,
looking down (done this way 'cause the pipe is always full and to reduce
problems from possible debris accumulation via a bottom-mount). I'm
calculating flow via a theoretical flow approach, thus avoiding the need to
do a velocity index. All in all, the system has worked well.
I'd be happy to discuss this further if anyone wants to call or email me
directly,
Andrew
Andrew Hautzinger
Hydrologist
Branch of Water Resources
U.S. Fish and Wildlife Service
500 Gold Street SW, Suite 9016
Albuquerque, NM, 87102
505 248-7946 (direct)
505 248-7950 (WR_Branch's Fax)
505 362-2821 (WR_Branch's Cell)
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Today's Topics:
1. Argonaut-SW (Neil Kamal Ganju)
2. Re: Argonaut-SW (Tracy Vermeyen)
----------------------------------------------------------------------
Message: 1
Date: Tue, 29 Mar 2005 17:28:08 -0800
From: Neil Kamal Ganju <nganju at usgs.gov>
Subject: [Acoustics] Argonaut-SW
To: acoustics at simon.er.usgs.gov
Message-ID:
<OF33F10F39.A8E18FB8-ON08256FD4.0007894D-88256FD4.000811AE at usgs.gov>
Content-Type: text/plain; charset="us-ascii"
Has anyone used the Sontek Argonaut-SW to measure flow in a submerged
pipe? I saw a testimonial on Sontek's website, but I wanted to get more
than one opinion.
We used to measure flows between salt ponds (through submerged pipes)
using a downward-looking RDI in a tethered boat, towed in an arc around
the suction end. A good deal of post-processing was necessary to correct
for the unusual velocity profiles and large percentage of lost
bins/ensembles.
It seems like the SW is a better solution (ignoring the logistics of
deploying in a submerged pipe). Any thoughts? Thanks in advance...
Neil K. Ganju
U.S. Geological Survey
Placer Hall
6000 J Street
Sacramento, CA 95819-6129
(916) 278 3117, (916) 207 2206
nganju at usgs.gov
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Message: 2
Date: Tue, 29 Mar 2005 18:48:13 -0700
From: "Tracy Vermeyen" <tvermeyen at do.usbr.gov>
Subject: Re: [Acoustics] Argonaut-SW
To: <acoustics at simon.er.usgs.gov>,<nganju at usgs.gov>
Message-ID: <s249a2fa.089 at ibr8gateway.do.usbr.gov>
Content-Type: text/plain; charset=US-ASCII
Hi Neil,
I am involved in a canal seepage study where we are using Sontek SWs in
three culverts to measure flows over a 5-month irrigation season. The
SWs were placed in 6-ft, 5-ft, and 4-ft culverts which flowed full and
partially full. The SWs were powered with 12-v batteries and they
worked very well with very few lost data. We had one instance when
sediment deposition caused the signal to drop out and we lost a weeks
worth of data. Other than that and a dead battery the flowmeters worked
as advertised. As part of this study, we did a laboratory evaluation of
the SW in an 18-inch PVC culvert, if you are interested I can send you a
report of this laboratory evaluation.
Best wishes for your study,
Tracy B. Vermeyen, P.E.
Hydraulic Engineer
U.S. Bureau of Reclamation
Water Resources Research Laboratory
P.O. Box 25007, D-8560
Denver, Colorado 80225-0007
Phone: 303-445-2154
FAX : 720-544-0551
Cell: 303-870-9178
e-mail: tvermeyen at do.usbr.gov
http://www.usbr.gov/pmts/hydraulics_lab/tvermeyen/index.html
>>> Neil Kamal Ganju <nganju at usgs.gov> 03/29/05 6:28 PM >>>
Has anyone used the Sontek Argonaut-SW to measure flow in a submerged
pipe? I saw a testimonial on Sontek's website, but I wanted to get more
than one opinion.
We used to measure flows between salt ponds (through submerged pipes)
using a downward-looking RDI in a tethered boat, towed in an arc around
the suction end. A good deal of post-processing was necessary to correct
for the unusual velocity profiles and large percentage of lost
bins/ensembles.
It seems like the SW is a better solution (ignoring the logistics of
deploying in a submerged pipe). Any thoughts? Thanks in advance...
Neil K. Ganju
U.S. Geological Survey
Placer Hall
6000 J Street
Sacramento, CA 95819-6129
(916) 278 3117, (916) 207 2206
nganju at usgs.gov
------------------------------
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